I mean, they could. They have been cutting costs in the wrong areas, though - those harder to replace if exgoogled. There's plenty of unnecessary fat in Mozilla as an organization. They have been doing lots of expensive (in terms of developer and testing resources) unneeded crap (apparently to support the appearance of relevancy, which is different from relevancy itself), they also don't need that many management people.

Let's please remember how Mozilla started. Yes, a browser back then and a browser now are two completely different things, but the imbalance in resources has always been there. It's just that now they are spreading resources where they shouldn't, to imitate Chrome in things secondary to a browser itself. They don't have the resources for that even with Google, and of course they won't otherwise.

Also supporting something like XULRunner or in general olden times Gecko would help, so that people could use FF's engine like they still do with Chromium and Webkit. That would increase the amount of people contributing in various ways.

That's how I see it, my humble opinion and all that.